Study Details
Study Title: Performance Analysis of Centerline and Shoulder Rumble Strips Installed in Combination in Washington State
Authors: D. Olson, M. Sujka, and B. Manchas
Publication Date:APR, 2013
Abstract: WSDOT began installing rumble strips on undivided highways in 1999 as a countermeasure for roadway departure crashes. Installations on the shoulders were intended to reduce run-off-the-road crashes, while centerline rumble strips targeted reductions in cross-centerline crashes. A March 2011 report detailed the performance of centerline rumble strips on Washington State highways. This study:
- Examines the combined effects of centerline and shoulder rumble strips.
- Details the performance of rumble strips on undivided highways in Washington State under a variety of conditions.
- Explores various traffic volumes, geometric conditions, lane and shoulder widths, and driver contributing circumstances.
- Compares various installation scenarios with shoulder and centerline rumble strip installation at different times, as well as simultaneous installation.
Study Citation: Olson, D., M. Sujka, and B. Manchas. "Performance Analysis of Centerline and Shoulder Rumble Strips Installed in Combination in Washington State". Washington State Department of Transportation, Office of Research and Library Services, WA-RD 799.1, April 2013.
Study Report: Download the Study Report Document
CMFs Associated With This Study
Category: Roadway
Countermeasure: Install centerline and shoulder rumble strips
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.34 | 66 | | Head on,Run off road,Sideswipe | All | Not specified | Rural |
0.44 | 56 | | Head on,Run off road,Sideswipe | K,A | Not specified | Rural |
0.29 | 71 | | Head on,Sideswipe | All | Not specified | Rural |
0.425 | 57.5 | | Head on,Sideswipe | K,A | Not specified | Rural |
Countermeasure: Install centerline rumble strips on roads with existing shoulder rumble strips
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.554 | 44.6 | | Head on,Run off road,Sideswipe | All | Not specified | Rural |
0.758 | 24.2 | | Head on,Run off road,Sideswipe | K,A | Not specified | Rural |
0.353 | 64.7 | | Head on,Sideswipe | All | Not specified | Rural |
0.758 | 24.2 | | Head on,Sideswipe | K,A | Not specified | Rural |
Category:Shoulder treatments
Countermeasure: Install shoulder rumble strips
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
1.123 | -12.3 | | Head on,Run off road,Sideswipe | All | Not specified | Rural |
1.053 | -5.3 | | Head on,Sideswipe | All | Not specified | Rural |
Countermeasure: Install shoulder rumble strips on roads with existing centerline rumble strips
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.625 | 37.5 | | Head on,Run off road,Sideswipe | All | Not specified | Rural |
0.678 | 32.2 | | Head on,Run off road,Sideswipe | K,A | Not specified | Rural |
0.932 | 6.8 | | Head on,Sideswipe | All | Not specified | Rural |
0 | 100 | | Head on,Sideswipe | K,A | Not specified | Rural |
0.53 | 47 | | Run off road | All | Not specified | Rural |